plan(t2062): file self-modifying tooling test discipline self-improvement task

[marcusquinn]

Summary

Files the self-improvement task t2062 captured from the GH#18538 session: a rule for testing scripts that are themselves part of the test/verification loop.

• New TODO entry under Ready
• New brief at todo/tasks/t2062-brief.md with implementation steps and evidence chain
• Linked to issue t2062: docs(build.txt): self-modifying tooling test discipline #18753

Why

PR #18748 (the GH#18538 --admin fallback) shipped a set -e bug because my local self-test passed only thanks to an uncommitted if-form fix in the worktree. The merged main code was the broken bare-assignment form. PR #18750 was the hotfix.

The general lesson — "when you edit a script that the test loop invokes, your local working copy IS your test environment" — isn't currently captured anywhere in build.txt. t2062 fixes that.

What this PR contains

This is a planning-only PR (no code change). It just adds:

• TODO.md entry
• todo/tasks/t2062-brief.md

The actual build.txt edit is left for a worker to pick up via auto-dispatch (tier:simple, ~30m).

Ref #18538
Ref #18753

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Summary by CodeRabbit

• Chores
  • Updated project task tracking documentation with a new task entry.

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[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 1e264a25-b3fb-4201-a483-539206fa0838

📥 Commits

Reviewing files that changed from the base of the PR and between a084252 and 03ffccc.

⛔ Files ignored due to path filters (1)

• todo/tasks/t2062-brief.md is excluded by !todo/tasks/*-brief.md

📒 Files selected for processing (1)

• TODO.md

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Walkthrough

A new TODO entry (t2062) was appended to document discipline and workflow requirements for testing self-modifying tooling, including commit procedures and evidence-chain references to related GitHub issues and pull requests.

Changes

Cohort / File(s)	Summary
TODO Documentation TODO.md	Added task t2062 outlining testing discipline for self-modifying scripts, specifying workflow constraints (commit before test, re-stash/re-checkout for retests) and reference chain to prior issues/PRs.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

📋 A rule now etched in stone so grand,
When scripts modify themselves, we understand—
Commit, then test, in measured dance,
Each trace and link a safety stance. ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the main change: filing a new planning task (t2062) for documenting self-modifying tooling test discipline, which aligns with the PR's core objective of adding a TODO entry.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/t2062-self-modifying-tooling-rule

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[github-actions]

🔍 Code Quality Report

�[0;35m[MONITOR]�[0m Code Review Monitoring Report

SonarCloud: 0 bugs, 0 vulnerabilities, 226 code smells

Mon Apr 13 22:48:57 UTC 2026: Code review monitoring started
Mon Apr 13 22:48:57 UTC 2026: SonarCloud - Bugs: 0, Vulnerabilities: 0, Code Smells: 226

📈 Current Quality Metrics

• BUGS: 0
• CODE SMELLS: 226
• VULNERABILITIES: 0

Generated on: Mon Apr 13 22:49:00 UTC 2026

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Generated by AI DevOps Framework Code Review Monitoring

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

_{TIP This summary will be updated as you push new changes. Give us feedback}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud